docs: def set_footer(self, text: str, icon_url: str = None) -> None:
          """
          Sets the footer of the embed.
  
          Parameters
          ----------
          text: str
              The footer text.
  
          icon_url: str, optional
              URL for the icon in the footer.
  
          """
          self.footer = {
              'text': text,
              'icon_url': icon_url
          }